Adjustable stop for gage-plates.



No. 638,97l. Patented Dec. 12, I899;

H. s. MAIDHOF.

ADJUSTABLE STOP FOR GAGE PLATES.

(Application filed Apr. 3, 1899.)

(No Model.)

ms uanms PUERS co. Fnormuwu. WASHINGTON. a. c.

Nrrnn stares HENRY S. MAIDHOF,

.arnw'r rricnt OF NEW YORK, N. Y.

ADJUSTABLE STOP FOR GAGE-PLATES.

SPECIFICATION forming part of Letters Patent No. 688,971, dated December 12, 1899.

Application filed April 3, 1899. Serial No. 711,506. (No model.)

To ctZZ whom it may concern.-

Be it known that I, HENRY S. MAIDHOF, a citizen of the United States, and a resident of New York, in the county and State of New York, have invented a new and useful Improvement in Adjustable Stops, of which the following is a specification.

My invention relates to an improvement in adjustable stops for gage-plates, the object being to provide an improved stop which may be removably engaged with the gageplate, which may be clamped to the gageplate approximate to its desired adjustment, and which may then be accurately adjusted to the greatest nicety by an auxiliary adj usting device carried by the stop.

A further object of my invention is to provide a stop of the above character in which the screw-thread upon the auxiliary adj usting-bar need not be cut to the accuracy of a micrometer-gage and in which the guide and clamping-head of the stop are formed of the same piece, integral with the base-plate of the stop.

A practical embodiment of my invention is represented in the accompanying drawings, in which- Figure 1 represents a top plan View of the table of an embossing-machine and the gageplate carried thereby. Fig. 2 is an enlarged detail view showing the adjustable stop in side elevation in its position within one of the grooves in the gage-plate. Fig. 3 is a transverse vertical section through a portion of the table and gage-plate looking toward the rear of the stop. Fig. 4 is a top plan View of the parts represented in Fig. 2. Fig. 5 is a transverse vertical section looking toward the front of the adjustable stop. Fig. 6 is an inverted plan view of the stop, and Fig. 7 is a vertical central section taken longitudinally through the stop.

The table is denoted by A, and it may be of anyrequired shape and size to suit the purposes for which it is to be used.

The platen is denoted by B.

A gage-plate C is countersunk into the top of the table and partially embraces the platen B. This gage-plate O is provided with three sets of elongated slots 0, extending from a point near the outer edge of the gage-plate inwardly toward three sides of the platen.

The table A is cut away underneath each of the slots 0 to form grooves a. The outer ends of the slots are enlarged, as shown at 0.

Adjustable stops D may be removably engaged with any of the elongated slots 0. The base-plate of the adjustable stop is denoted by d, which base-plate has projecting from its bottom an L-shaped arm comprising a short portion or guide d, extended downwardly from a point a considerable distance from the rear end of the plate, and a rearwardly-extended portion d spaced from and running substantially parallel with the plate. The rear end of the arm cl is enlarged to form a head 01 of sufficient size to overlap the edges of the slot 0 when the head is within the groove a, the said head at the same time being sufliciently small to permit it to be withdrawn through the enlarged end 0 of the said slot. The downwardly-extended portion 01 of the arm is fitted to travel along between the edges of the slot 0 when the stop is in position, and the portion of the arm cl leading from the head 61 to the portion (1 is sufficiently narrow to permit it to be withdrawn through the slot as the head 01 is withdrawn through the enlarged end 0 thereof.

The device which'I have shown for clamping the stop at any desired position along the slot comprises a screw d permanently secured at its head in the head (1 and extending upwardly through a hole 01 in the plate to a point a short distance above the top of the plate. A clamp-nut d is fitted to engage the portion of the screw above the plate, so that when the nut is screwed inwardly the stop will be clamped to the plate and when unscrewed the clamp will be released there- Irom.

The plate D is provided near its front end with a pair of uprising ears or lugs d (1 spaced a short distance apart, through which a screw-threaded rod E passes. A thumbnut c has a screw-threaded engagement with the said rod E between the ears d d for adjusting the rod E forwardly or rearwardly. A spring F is interposed between the ear d and the adj ustingnut e for holding the rod E rigidly in any desired adjustment and also preventing any lost motion in the said rod. The front end of the rod E is provided with an arm 6', which extends downwardly below the plane of the plate I), so that when the stop is in position in engagement with a slot the end of the arm 6 will be located within the slot.

By the use of the spring F, which is herein represented as a spring washer, the screwthread upon the rod E may be cut roughly, thereby doing away with the necessity of cutting the screw to the nieety of a micrometergage, thus cheapening the cost of the stop without impairing its efficiency.

It is evident that slight changes might be resorted to in the form and arrangement of the several parts without departing from the spirit and scope of my invention. Hence I do not wish to limit myself strictly to the structure herein set forth; but

What I claim is- 1. The combination with a gage-plate having an elongated slot therein, of an adjustable stop comprising a base-plate, an arm projecting downwardly from the base-plate through the slot and thence rearwardly spaced from the plate and substantially parallel therewith, the rear end of the said arm being provided with an enlarged head overlapping the edges of the slot and means for drawing the base plate and rear end of the arm toward each other for clamping the stop to the gage-plate, substantially as set forth.

2. The combination with a gage-plate having an elongated slot therein, of an adjustable stop comprising a base-plate, an arm projecting downwardly from the base-plate through the slot and thence rearwardly spaced from the plate and substantially parallel therewith, the rear end ofthe said arm being provided with an enlarged head overlapping the edges of the slot and means for drawing the base-plate and enlarged head toward each other to clamp the stop to the gage-plate comprising a screw projecting upwardly from the rear end of the arm through the base-plate and a clam ping-nut engaging the screw above the base'plate, substantially as set forth.

In testimony that I claim the foregoing as my invention 1 have signed my name, in presence of two witnesses, this 29th day of March, 189.).

HENRY S. MAIDHOF.

Witnesses:

FREDK. HAYNES, EDWARD VIESER. 

